María José Martinez de Pisón, José Maldonado, Deco Nascimento, Carlos García Miragall y David Jengibre (Colectivo PDP11)

Running a PDP11 emulator, talking to an ASR33 teletype. It's Unix, but not as we know it.

(l-r) Another disk drive for the MicroVAX, the MicroVAX CPU card cage, another Q-Bus card cage to be built up as a PDP-11. High gain (> 15 dBi IIRC) 2.4GHz antenna on top that was used with the Soekris node at the Chateau.

photo by Scott Beale / Laughing Squid

This photo is licensed under a Creative Commons license. If you use this photo within the terms of the license or make special arrangements to use the photo, please list the photo credit as "Scott Beale / Laughing Squid" and link the credit to laughingsquid.com.

UNIX was developed on a computer like this.

María José Martinez de Pisón, José Maldonado, Deco Nascimento, Carlos García Miragall y David Jengibre (Colectivo PDP11)

PDP 11 - the machine Unix was developed on

For more information about The National Museum of Computing , visit www.tnmoc.org

Please take a look at www.retrocomputers.eu for more info about my retro computer collection.

Pavl showing the back of his customized lab coat

This is a close-up of what the Air Traffic controllers would see on the big green screen. Each of the numbers represents an aircraft with the top number being the aircraft identifier and the bottom number its height is 100s of feet - 007 = 700 feet.

The two horizontal lines just above centre is the approach to London Heathrow airport!

The Front end of the PDP-11/70 from Digital. Terminals like this were the birthplace of most of the technology that powers todays world, from Embedded Systems to the Web. I think that to this day this is just a beatiful piece of design and truly gorgeous to look at. Great design endures, long after the functionality subsides it seems

DEC PDP-11 software on paper tape

Deco Nascimento, Carlos García Miragall y David Jengibre (Colectivo PDP11)

"Shall we play a game?"

photo by Scott Beale / Laughing Squid

This photo is licensed under a Creative Commons license. If you use this photo within the terms of the license or make special arrangements to use the photo, please list the photo credit as "Scott Beale / Laughing Squid" and link the credit to laughingsquid.com.

[SOLD] DEC PDP-11 M7892 Unibus Flip Chip

A PDP-11/20 model I created in Second Life as part of my virtual vintage computer museum.

The paper in Bay City, MI, is still running a PDP11 to handle their classified advertising. Go figure. These are the 300 Meg hard-drives. Old people like me aren't phased by this, but, seriously, 300 Meg.

The 2 ATC radar displays showing a playback of air traffic. At West Drayton they had over 100 of these when it was responsible for air traffic throughout the South East. Since Swanick took over control, these systems were used for reviewing near misses and ATC controller training.

The wiring on the top of this machine was beautiful. Was this an 18 bit machine?

Stumbled upon some old photos of 1970s computer equipment today at work (thanks to whoever took the photos all those years ago).

This is a Digital Equipment Corporation declab-11/40 computer system. Including a laboratory peripheral system, pdp 11/40, DECwriter interactive terminal, graphics terminal and disk drives.

The paper in Bay City, MI, is still running a PDP11 to handle their classified advertising. Go figure. Here it is from the back.

running on PDP11/34

The machine room at fandom-house.org, Somerville. There was another machine-room on the ground floor ...

Micro PDP11/93 front panel.

4MByte RAM,5.25"FDD,HDD,TAPE,VT220 CRT Terminal etc.

This computer can work.

Top - Bottom:

PDP-11/03

PDP-11 LSI-11 Card Chassis

Data Systems Design 880S8

For more information about The National Museum of Computing , visit www.tnmoc.org

Please take a look at www.retrocomputers.eu for more info about my retro computer collection.

DEC PDP-11 software on paper tape

DEC PDP-11 software on paper tape

At The National Computer Museum, Bletchley Park.

tnmoc.org/home.aspx

Langs de muur staan antieke computers. De twee hele grote rechts zijn DEC VAX11/750s. Dit was een van de eerste 32-bits computers. De CPU is opgebouwd uit bit-slice processors: 32 processors van 1 bit naast elkaar.

Daarnaast staan peripherals zoals harde schijven. Achter de matrassen van de boot staan nog 3 zonnepanelen die ik ooit kocht om ervaring mee op te doen maar waar ik nooit aan toegekomen ben.

Daarnaast staat een rack met een Contronic computer. Dit was de doseercomputer van een mengvoederfabriek waar ik ooit mijn carrière begon. De hele machine bestaat uit eenvoudige standaard logicacomponenten (4000 familie). De CPU verwerkt 4-bit opcodes en dus heeft de CPU slechts 16 instructies. Spronginstructies maken daar geen deel van uit: de program counter bestaat uit een eenvoudige 12-bits teller die gewoon vanaf 0 naar 4095 telt en dan weer op 0 begint. De uitgang van die teller gaat rechtstreeks naar de adreslijnen van de EPROMs. Het grote voordeel hiervan is is dat de computer altijd realtime is: de cyclus is altijd precies even lang.

Daarnaast staat nog een rack met DEC computers: twee PDP11/34s en een PDP11/04. Dit zijn machines uit begin jaren 70 van de vorige eeuw. Ook bij deze machines is alles opgebouwd uit losse logicacompontenten. Maar dit is wel een serieuze machine met complexe instructies en als ik mij niet vergis zelfs een memory manager.

Daarnaast is de deur naar het loodsgedeelte. Rechts is een stukje van mijn op nummer geïndexeerde magazijn te zien.